That depends on what you want to spend, what type of flying you want to do, and your body type. There are some pretty good threads you can search through. You can also go to the Jumpsuit section of the Gear page to see all the brands and read reviews.

Check with your local jumpers. Sometimes there's a local suit builder that will give you personal attention. Also, depending on the discipline, jump what the other locals (the people you'll be jumping with) jump.